UL fuel efficient cook system

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My guess is that the lid increases the efficiency of the system. I know that my other pots boil faster with the lid on.

You're right. And I suppose in that case, as long as you are just looking for something that sits on top nicely to keep the heat in and you aren't going to try to use it to pour with or strain or anything, the MicroMo lid would work just fine!
 

gtriple

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You're right. And I suppose in that case, as long as you are just looking for something that sits on top nicely to keep the heat in and you aren't going to try to use it to pour with or strain or anything, the MicroMo lid would work just fine!
I wonder if the Zip lid would be better. The reviews on Jetboil's site seem to indicate that.
 

gtriple

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I think the issue is that the shroud contacts the bottom of the fins pulling heat out of the fins.
Have you seen/done any testing on this? If this is true, then could I simply bend the bottom of the shroud down just enough to not contact the fins? It would also add wind resistance.

I just got mine in, so I may do some testing once I get my fuel canisters out tomorrow. Right now I'm trying to take off the handle attachment.
 

BBob

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Have you seen/done any testing on this?
No I haven’t. Doesn’t seem worth messing with. Have at it though :)

As to various pot lid weights (grams):
Petrel, MicroMo, Inferno aftermarket, take out lid upside down. Inferno doesn’t sit down into Petrel but it could be used. Upside down take out lid fits great but is a little wide. I think I’d be looking for a plastic or aluminum lid of sorts because the MicroMo isn’t much of a weight savings over the original Petrel lid. With some patience you could trim the outer rim off the take out lid. It would be about perfect and lose more weight.
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gtriple

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Here's some quick and dirty testing I did. I wouldn't take any of the individual results as perfect, but the comparisons should be solid. In the end, I'm really happy with the 4th setup. Swapped handle and attachment for a MicroMo cozy (fits perfectly), swapped lid to a 32oz QT drink lid, and I bent the base of the legs on the stove until the top of the stove sat nearly flush with the bottom of the Petrel.

TestFuel StartFuel EndFuel Used (g)Time (s)Wt (g)
1st test - Original6366306137166
2nd test - Cozy + Original Lid + Unbent BRS Legs6306255129176
3rd test - Cozy + QT Lid + Unbent BRS Legs6256196143153
4th test - Cozy + QT Lid + Bent BRS Legs6196136134153
5th test - Cozy + No Lid + Bent BRS Legs6136067165147

I ended up getting a 5g lid from the convenience store that fits slightly snugly over the cozy so that it doesn't come up while boiling. I just wish it was transparent instead of black, so I'm going to look for one of those.

I've got a bear hunt coming up in a couple of weeks. After that, I'm going to order another one and start monkeying around with the bottom of the shroud to see if it could both increase efficiency (by not touching the fins) and act as a partial wind screen.
 
Last edited:
Joined
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Here's some quick and dirty testing I did. I wouldn't take any of the individual results as perfect, but the comparisons should be solid. In the end, I'm really happy with the 4th setup. Swapped handle and attachment for a MicroMo cozy (fits perfectly), swapped lid to a 32oz QT drink lid, and I bent the base of the legs on the stove until the top of the stove sat nearly flush with the bottom of the Petrel.

TestFuel StartFuel EndFuel Used (g)Time (s)Wt (g)
1st test - totally original6366306137166
2nd test - swapped to cozy6306255129176
3rd test - swapped to QT lid6256196143153
4th test - bent legs of BRS to be closer to bottom6196136134153
5th test - no lid6136067165147

I ended up getting a 5g lid from the convenience store that fits slightly snugly over the cozy so that it doesn't come up while boiling. I just wish it was transparent instead of black, so I'm going to look for one of those.

I've got a bear hunt coming up in a couple of weeks. After that, I'm going to order another one and start monkeying around with the bottom of the shroud to see if it could both increase efficiency (by not touching the fins) and act as a partial wind screen.
Thanks for sharing the results! Would you mind posting a picture of how you bent the legs on the brs in the 4th test?
 

gtriple

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Thanks for sharing the results! Would you mind posting a picture of how you bent the legs on the brs in the 4th test?
Yes, I'll post a pic tonight. Pretty simply though, I just put the legs in their "extended/locked" positions (like you were going to put a pot on it), and then pushed down on the jagged portion while holding near the rotating base. I did this for each leg and checked it every time until the pot was low enough and level.
 
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Thanks! That's different than what I had pictured.

Is the hex on that petrel pot welded to the bottom of the support or just touching? If you can get that support bent down to act as a windscreen I bet will improve performance quite a bit. There's a lot of material to work with there.
 

gtriple

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Thanks! That's different than what I had pictured.

Is the hex on that petrel pot welded to the bottom of the support or just touching? If you can get that support bent down to act as a windscreen I bet will improve performance quite a bit. There's a lot of material to work with there.
The shroud is not attached to the HX fins. I already bent one shroud just a tiny bit, but wanted to leave it like that until I could test it with "wind".
 
Joined
Aug 17, 2015
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Location
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Here's some quick and dirty testing I did. I wouldn't take any of the individual results as perfect, but the comparisons should be solid. In the end, I'm really happy with the 4th setup. Swapped handle and attachment for a MicroMo cozy (fits perfectly), swapped lid to a 32oz QT drink lid, and I bent the base of the legs on the stove until the top of the stove sat nearly flush with the bottom of the Petrel.

TestFuel StartFuel EndFuel Used (g)Time (s)Wt (g)
1st test - totally original6366306137166
2nd test - swapped to cozy6306255129176
3rd test - swapped to QT lid6256196143153
4th test - bent legs of BRS to be closer to bottom6196136134153
5th test - no lid6136067165147

I ended up getting a 5g lid from the convenience store that fits slightly snugly over the cozy so that it doesn't come up while boiling. I just wish it was transparent instead of black, so I'm going to look for one of those.

I've got a bear hunt coming up in a couple of weeks. After that, I'm going to order another one and start monkeying around with the bottom of the shroud to see if it could both increase efficiency (by not touching the fins) and act as a partial wind screen.

Assuming all your tests are with only 1 variable changed - 4th test with the bent legs did not have a cozy?
 

gtriple

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Another tip - I really prefer using the Bic EZ Reach Candle lighter with this setup. It adds a little weight, but it more than makes up for it because you can put the pot on the legs and then turn the stove on and light it.
 

C Bow

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If you like the soto wind master with the tri plex it fits perfect in the petrel and the toaks ti 95mm lid old and new style fits the petrel but I prefer the old style lid with it
 
OP
AK Troutbum
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Chugiak, Alaska
My absolute lightest and most efficient, workable cook system. Picture is with a UL aluminum lid, but the much more durable carbon fiber lid could be supplemented for a wt. penalty of 0.2 oz.
Total cost was about $45, and that includes the cost of the lighter.
51bd3b12ca56b443800bc77061c9ac5b.jpg

16b36c63ed9d3c6bd6bf2107d00e7c7f.jpg

3a9524e98650a00cdf1314b44a5086a1.jpg

acb28bbaa639f753e78b9c2f9608c228.jpg



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chasewild

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Mar 22, 2016
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CO -> AK
My absolute lightest and most efficient, workable cook system. Picture is with a UL aluminum lid, but the much more durable carbon fiber lid could be supplemented for a wt. penalty of 0.2 oz.
Total cost was about $45, and that includes the cost of the lighter.
51bd3b12ca56b443800bc77061c9ac5b.jpg

16b36c63ed9d3c6bd6bf2107d00e7c7f.jpg

3a9524e98650a00cdf1314b44a5086a1.jpg

acb28bbaa639f753e78b9c2f9608c228.jpg



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That damn BRS stove keeps popping up despite my best efforts! It just PURGED fuel for me. I may have to retry.
 

Dnicode

FNG
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Sep 18, 2023
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I’ve used the brs stove for a few years now. I melted one of them cooking with a cast iron on it. Otherwise mine works pretty well and even offers a good amount of flame adjustment from simmer to flame thrower. For the price it’s a decent little stove but def lesser quality than the name brand competition like the Optimus crux etc…


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